NAME

SYNOPSIS

#include<linux/isdn.h>

DESCRIPTION

/dev/isdnctrl is a character device with major number 45 and minor
numbers 64 to 127. It allows controlling functionality of the Linux
ISDN subsystem.

IOCTLFUNCTIONS

Currently, the following ioctl calls are supported:
IIOCNETAIF
Add an ISDN network interface.
This function adds a network interface to the kernel’s device
table. This interface can be used just like normal eth
interfaces.
Argument:
arg should point to a zero terminated string of max. 10
characters. if arg is NULL, the kernel assigns a name.
Return:
On success, the name of the new interface is copied to
arg. and the call returns 0. On failure, an error code
is returned.
IIOCNETASL
Create a slave interface.
Creates a slave interface for RAW-device channel-bundling.
These devices behave like network-interfaces, execpt they are
invisible to user. Only ISDN parameters can be controlled, but
no IP-parameters. IP-parameters are inherited from the
corresponding master-device.
Argument:
arg should point to a zero terminated string of max. 21
characters containing two comma-separated names. The
first part is the name of an existing ISDN network
device, which will be master. The second part will be the
name of the new slave interface.
Return:
On success, the name of the new interface is copied to
arg. and the call returns 0. On failure, an error code
is returned.
IIOCNETDIF
Delete a network-interface.
This call deletes an existing ISDN network interface.
Argument:
arg should point to a zero terminated string of max. 10
characters naming an existing interface which will be
deleted. If the interface is a master interface, all it’s
slave-interfaces will be deleted also.
Return:
On success, the call returns 0. On failure, an error code
is returned.
IIOCNETSCF
Set configurable parameters of an ISDN network interface.
This call replaces all ISDN related parameters of an interface
by the parameters given.
Argument:
arg shoud point to a structisdn_net_ioctl_cfg (defined
in linux/isdn.h)
Return:
On success, the call returns 0. On failure, an error code
is returned.
IIOCNETGCF
Get configurable parameters of an ISDN network interface.
This call returns all ISDN related parameters of an interface.
Argument:
arg shoud point to a structisdn_net_ioctl_cfg (defined
in linux/isdn.h) which will be filled by the current
setup.
Return:
On success, the call returns 0 and the interface-setup is
copied to *arg. On failure, an error code is returned.
IIOCNETANM
Add a phone number to an ISDN network interface.
This call adds a phone number to an existing network interface.
Argument:
arg shoud point to a structisdn_net_ioctl_phone which
contains necessary information.
Return:
On success, the call returns 0 and the phone number is
added to either outgoing or incoming number list. On
failure, an error code is returned.
IIOCNETDNM
Delete a phone number from an ISDN network interface.
This call deletes a phone number from an existing network
interface.
Argument:
arg shoud point to a structisdn_net_ioctl_phone which
contains necessary information.
Return:
On success, the call returns 0 and the phone number is
deleted from either outgoing or incoming number list. On
failure, an error code is returned.
IIOCNETGNM
Get list of phone numbers from an ISDN network interface.
This call returns the list of phone numbers associated to an
existing network interface.
Argument:
arg shoud point to a a union of structisdn_net_ioctl_phone and a buffer, large enough to hold a
concatenated list of strings containing the phone
numbers.
Return:
On success, the call returns 0 and the list of phone
numbers is returned as a space-separated list of number-
strings terminated by a NULL byte.
IIOCNETDIL
Trigger dialing of an ISDN network interface.
This call initiates dialing of an ISDN network interface, if it
is not connected. Normally, this ioctl is not needed, because
ISDN network interface perform dial on demand by deafult.
Argument:
arg should point to a zero terminated string of max. 10
characters naming the desired interface.
Return:
On success, the call returns 0 and the interface starts
dialing.
IIOCNETHUP
Hangup an ISDN network interface.
This call initiates hangup of an ISDN network interface, if it
is connected.
Argument:
arg should point to a zero terminated string of max. 10
characters naming the desired interface.
Return:
On success, the call returns 0 and the interface hangs
up.
IIOCNETALN
Add a link of an MPP-configured ISDN network interface.
This call initiates dialing of a Multilink-PPP slave ISDN
network interface, if it is not connected.
Argument:
arg should point to a zero terminated string of max. 10
characters naming the desired interface.
Return:
On success, the call returns 0 and the interface starts
dialing.
IIOCNETDLN
Hangup an MPP-configured ISDN network interface.
This call initiates hangup of an Multilink-PPP ISDN network
interface, if it is connected.
Argument:
arg should point to a zero terminated string of max. 10
characters naming the desired interface.
Return:
On success, the call returns 0 and the interface hangs
up.
IIOCNETARU
Add a timeout rule to an ISDN network interface.
This call adds a timeout rule to an existing interface.
Argument:
arg should point to a structisdn_ioctl_timeout_rule
containing the necessary parameters.
Return:
On success, the call returns 0 and the rule is added to
the rule list of the interface.
IIOCNETDRU
Delete a timeout rule from an ISDN network interface.
This call deletes a timeout rule from an existing interface.
Argument:
arg should point to a structisdn_ioctl_timeout_rule
containing the necessary parameters.
Return:
On success, the call returns 0 and the rule is deleted
from the rule list of the interface.
IIOCNETGRU
Get a timeout rule from an ISDN network interface.
This call returns a timeout rule from an existing interface.
Argument:
arg should point to a structisdn_ioctl_timeout_rule
containing the necessary parameters.
Return:
On success, the call returns 0 and the struct is filled
from the rule list of the interface.
IIOCNETBUD
Handle budget accounting of an ISDN network interface.
Argument and Return:
to be defined.
IIOCSETVER
Set verbosity of link level.
Argument:
arg is an integer, defining the new verbose value.
Return:
This call always returns 0.
IIOCSETGST
Set global stop flag of link level.
Argument:
arg is an integer, defining the new stop flag value (0 or
!0).
Return:
This call always returns 0.
IIOCSETBRJ
Set busreject flag of a lowlevel driver.
Argument:
arg should point to an structisdn_ioctl_struct
containing the driver’s ID and the value of the busreject
flag.
Return:
On success, the call returns 0 and the busreject flag of
the selected driver is set according the given parameter.
IIOCSIGPRF
Enable signaling on change of modem profiles.
With this call, the calling process is registered to receive a
SIGIO on every change of any register of any ttyI. Thus it can
read register settings and save them to a file. The calling
process has to keep the device open in order to receive
notifications. As soon as it closes the device, registration is
deleted.
Argument:
none
Return:
This call always returns 0.
IIOCGETPRF
Get all modem register settings.
With this call, all modem registers of all ttyI devices can be
read.
Argument:
arg should point to a buffer of length (
ISDN_MODEM_ANZREG + ISDN_MSNLEN ) * ISDN_MAX_CHANNELS.
Return:
On return, the provided buffer is filled with the
register values.
IIOCSETPRF
Set all modem register settings.
With this call, all modem registers of all ttyI devices can be
written.
Argument:
arg should point to a buffer of length (
ISDN_MODEM_ANZREG + ISDN_MSNLEN ) * ISDN_MAX_CHANNELS.
filled with the values of all modem registers.
Return:
On return, the modem registers are set from the contents
of the provided buffer.
IIOCSETMAP
Set Mapping table.
This call is used to set EAZ/MSN mapping of a lowlevel driver.
Argument:
arg should point to a structisdn_ioctl_struct containing
the necessary parameters.
Return:
On success, the mapping table is set from the given
parameters an the call returns 0.
IIOCGETMAP
Get Mapping table.
This call is used to get EAZ/MSN mapping of a lowlevel driver.
Argument:
arg should point to a structisdn_ioctl_struct containing
the necessary parameters.
Return:
On success, the current mapping table of the given driver
is returned and the call returns 0.
IIOCDRVCTL
Lowlevel driver ioctl.
This call is used for controlling various lowlevel drivers. The
ioctl-code for this command is assembled by adding IIOCDRVCTL
(128) and the desired driver ioctl-code. Therefore, a lowlevel
driver can understand a maximum of 127 different ioctls.
Argument:
arg should point to a structisdn_ioctl_struct containing
the necessary parameters, especially the driver-Id must
be filled correctly. The arg component inside
isdn_ioctl_struct is handed down to the driver’s ioctl
function. Its meaning is not defined here and depends on
the lowlevel driver. See documentation for the various
lewlevel drivers for information about driver- specific
ioctl.
Return:
The return code depends on the driver’s ioctl function.
Usually, 0 means no error.